Lithic composition



IUO- UUIVII'UDI l IUND,

Volatile matter J Fixed carb n \J- Sulphur COATING 0R PLASTIC.

Patented June 7, 1932 PATENT OFFICE WALTER E. 'WIILE'IT, OF CORTLAND, NEW YORK LITHIO COMPOSITION No Drawing.

This invention relates to the lithic composition of matter capable of producing a product of synthetic flint and it consists in the novel aggregate and steps hereinafter de- 5 scribed and claimed.

In the composition the following materials are commingled substantially in the proportions stated:

Per cent Qmshedwd/or coke) 64 'v I use a form of ke of flint like structure that runs at least 84- nercen pure carbon. This ingredient is what is termed-carbon. S h a coke is that manufactured by Semet- 20 Solvay ompany and a recent analysis shows,

Per cent 1.65 90.15 8.20 .66

This type of coke is of such hardness that it will cut la in a manner similar to a diamon an t erein differs from the usual type of coke which is of rather soft nature and will not even scratch glass.

The amount of sodium thiosulphatea salt of thiosulphuric acid, sometimes, called hyposulphite, and the amount of alum will depend on the character and analysis of the water used, such water varies in different locations. If the soap powder is in a concentrated form the percentage would be changed correspondingly.

In the process of compounding, the a lime, alum, and sodium thiosul hate in t e1r rem-gamma commingled, preferably in a hall @inding mill, and a quantity of this ry compoun 1s a ed in the proportion stated or varied to the Application filed February 17, 1931.

Serial No. 516,527.

amount of crushed or granulated carbon and (mm-is 0 orm mount to be mixed, depending on the particular work at hand and requirements necessary.

The process of mixing is to use an open drum mixer placing therein the carbon, cement, and a portion of the ready compounded soap, lime, alum, and sodium thiosulphate, the combined dry ingredients are then thoroughly commingled after which suflicient water is added to make a plastic mass, the mixing is then continued until the soluble portions are dissolved and thoroughly blended, after which it is either placed in mglris or laid as the work requires an allowed to set by chemical reaction.

The resulting stone-like product possesses the following characteristic qualities:

Firsjpt,b a dens?) hqmogeneous mass to the extent o eing a so utely water resisti Second, the crushing strengt oft e roduct is in excess of four thousand pouri s per square inch in twenty-one days.

Third, the product possesses resilienc to withstand continued concussions wit out crumbling or dusting.

Fourth, the product possesses elasticity to withstand a bending moment far in excess of the usual reinforced concrete unit.

It is necessary to have soft water in order to thoroughly dissolve the soluble dry ingredients while in the process of mixing, the character of the water may require slight change in the proportion of the sodium thiosulphate.

The carbon or coke used is hard and abrasive similar to crushed flint, sharp and abrasive enough to cutcglass in a manner similar to a diamond which is a crystal carbon. The coke used is therefore termed glass-hard coke.

' I claim:

1. A lithic composition aggregate including crushed glass-hard coke, cement lime, soapp qv der, alum, and sodium 1osu phate.

2. A lithic composition aggregate including the following ingredients in substantially the proportions stated:

Per cent '5 Crushed glass-hard coke 64 Cement 30 Lime 1 Soap powder 2 um 1 10 Sodium thiosulphate 1 In testimony whereof I aflix my signature.

WALTER E. WILLETT; 

